Hi Jack, One question: Analog or digital signals at 1.9 GHz? Regards, Doug > From: Jack Olson <[log in to unmask]> > To: [log in to unmask] > Subject: DES: Via Inductance > Date: Thursday, July 31, 1997 12:51 PM > > I am a lowly board designer, and I have been asked to > replace our standard via types (0.18 hole diameter) with > vias that are twice as large (.036 holes) to reduce the > inductance. I haven't seen any data to warrant a change > like this, so I was hoping: > > Can anyone steer me towards finding out the inductance of > vias at 1.9GHz based on their diameter? > > Is anyone brave enough to hazard an opinion as to the REAL > effect of vias on a 1.9GHz circuit? I should mention that > all signals are on one layer, the vias are ONLY for power > and ground access. > > confused but want to learn, Jack > > *************************************************************************** > * TechNet mail list is provided as a service by IPC using SmartList v3.05 * > *************************************************************************** > * To subscribe/unsubscribe send a message <to: [log in to unmask]> * > * with <subject: subscribe/unsubscribe> and no text in the body. * > *************************************************************************** > * If you are having a problem with the IPC TechNet forum please contact * > * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * > *************************************************************************** *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To subscribe/unsubscribe send a message <to: [log in to unmask]> * * with <subject: subscribe/unsubscribe> and no text in the body. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************